Machine for the manufacture of secondary-battery plates



UNITED STATES PATENT OFFICE.

IIIRAM II. CARPENTER, OF DENVER, COLORADO.

MACHINE FOR THE MANUFACTURE OF SECONDARY-BATTERY PLATES.

SPECIFICATION forming part of Letters Patent No. 414,288, dated November5, 1889.

Application filed January 2, 1888. serial No. 295,216- (No model) To allwhom it may concern.-

Be it known that I, HIRAM H. CARPENTER, a citizen of the United States,residing in the city of Denver, county of Arapahoe, and State ofColorado, have invented a new and useful Machine or Punch forManufacturing Electrodes for Secondary or Electric Storage Batteries;and I. do hereby declare the following to be a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, in which- Figure 1 shows a perspective ofmy new machine for the manufacture of electrodes or plates for secondaryor storage batteries. Fig. 2 shows the head of punches for theperforation of electrodes and a section of the same through a: y. Fig. 3shows the stripper or device for freeing the punches from the materialor elect-rode punched, and which also serves to hold the punches inposition, with a section through as y of the same. Fig. atrepresents thedie to receive the punches as well as the material or plug punched outafter passing through the material or elect-rode so perforated, with asection of the same through ,yll

Letters of like name and size refer to like parts in each of thefigures.

The object of my invention is to provide a means for perforatingelectrodes for secondary or electrical storage batteries, and to providea machine or punch whereby several hundred holes orpunctures can be madewith one impression; and to this end my invention consists in aperforation-punching machine with a head of several hundred punches, astripper B, and die 0, the construction thereof, the use orapplicatiomthe arrangement, and combination of the several partsthereof, as hereinafter specified.

A represents the head or plae into which the punches p P are fastenedorheaded,which is made of steel or other hard metal and firmly bolted tothe lower side of the plate E, against which the heads of the severalpunches p P rest or butt. The under side of the plate E presents aperfectly-smooth surface for the heads of the punches to rest against,and is preferably made of steel, but any hardened iron will answer. Thesockets or holes in the plate A to receive the punches p P, Fig. 2,arereamed at the upper ends, so as to permitthe heads of the punches to besunken even with the surface of the plate.

B is what I call a stripper, which notonly frees the punches from thematerial or plate punched, but also serves to hold the punches in astaunch and firm position, preventing them from bending or breaking.This stripper B is made of steel, through which of course are drilled asmany holes h H, Fig. 3, as there are punches, in the same position andof the same size as are the punches. The stripper is attached merely ontwo sliding bolts or loose bolts (which are not shown in the drawings)passed in a convenient place through the plates A and E, and is soregulated that when the punches are at their highest position thestripper cannot drop 01f but the punches recede only far enough into thestripper to free them from the material punched.

D D are strips of iron bolted onto the frame of the punch, extendingdownward, against which the stripper strikes in the upward movement ofthe punches. These pieces or strips of iron D D hold the stripperB, asrepresented in Fig. 1, until the punches are released. They may beadjusted to suit the thickness of the material punched by raising orlowering them.

0 shows the die or steel plate, through which are drilled holes the sameas the stripper, and into which holes the punches protrude after havingpassed through the material punched. This die is bolted upon the frame,as shown in Fig. l, leaving a space underneath it into which the plugsor material punched out drop. The material or electrode to be perforatedis placed upon the die O, pressure brought to bear upon the head eitherby lever, as shown in Fig. 1, or by means of any power desirable, andthe punches pressed through, carrying the plugs punched out into andthrough the dies or holes H h, Fig. l, dropping them beneath. Thepunches P p are made of the best steel and have a four-side point, andare of any length or size desirable and practicable, according to thethickness of the material to be perforated. The ones I am now using arean inch and a quarter in length and about a sixteenth of an "Theherein-described machine for perforat- I 5 ing by punching electrodesfor secondarybatteries, comprising the frame, the plate E, mounted toslidethereon, the headA, secured to said plate E and carrying the seriesof punches, the part B, acting as a stripper and a guiding-support forthe punches, and the 20 die 0, all arranged and combined substantiallyas shown.

In testimony that I claim the foregoing I have hereunto set my hand this27th day of December, AMD. 1888.

HIRAM H. CARPENTER.

WVitnesses:

WM. E. DOYLE, MASON B. CARPENTER, HARVEY RIDDELL.

